Liquid-level indicator



11 WZ MEE Dec, 11,1923.

A. U. WALTER LIQUID LEVEL INDICATOR 2 Sheets-Sheet 1 Filed Nov. 22 1921Dec. M, T1923. 1,4714% A. u. WALTER LIQUIb LEVEL INDI QATOR F iled Nov.22 1921 2 Sheets-Sheet 2 Patented Dec. ill, I923 ALBERT U. WALTER, OFBALTIMORE, MARYLAND, ASSIGNOR '20 CHARLES ADAJYIS BUCHANAN SHREVE, OFBALTIMORE, MARYLAND.

LIQUID-LEVEL INDICATDR.

Application filed November 22, 1921. Serial No. 516,972.

To all whom it may concern.-

Be it known that I, ALBERT U. lVr-in'rnn, a citizen of the UnitedStates, residing at Baltimore, State o f Maryjland, have inventedcertain new and useful Improvements inLiquid-Level Indicators, of whichthe following is a description, reference being had to the accompanyingdrawing and to the figures of reference marked thereon.

This invention relates to liquid level in dicators, and moreparticularly to devices for indicating the supply of liquid in a tank orreservoir. I

The main object resides in providing a device which will convenientlyand quickly indicate whether or not a suflicient supply of lubricant,gasolene or other liquid is present in a particular reservoir.

Another object of this invention resides in providing a cheap and simpleoil indicating attachment adaptedto be applied to the dash, or otherconvenient portion, of an automobile which will quickly operate toindicate the presence of a sutlicient quantity of lubricant in theengine crank case.

Still another object of this invention resides in providing a simpleassembly of a bracket and pump construction adapted for attachment tothe dash and for connection 219 to an oil level indicating outlet oroutlets in the crank case of an automobile.

These and other objects will in part be obvious and will in part appearfrom a perusal of the following specification taken in connection withthe accompanying drawings, in which Figure 1 is a view partly in sectionof the assembly;

Figure 2 is a plan view of the bracket and plunger pump;

Figure 3 is a perspective view of the bracket and pump;

Figure 4 is a view of a modification;

Figure 5 is a plan view thereof; and

Figure 6 is a view of still another modification.

In general, the invention consists in. providing the dash or otherconvenient portion of the automobile with a pump having a small chamberor reservoir connecting with a predetermined liquid level, outlet oroutlets in a liquid tank, such, for instance, as the crank case of theengine, so that when the pump is operated by hand, it will draw oil orother liquid from the reservoir to the pump chamber, if such oil orliquid is not below the predetermined level.

Referring now more particularly to the drawings, the invention forconvenience of illustration is shown as attached to the crank case of aFord automobile, which, as is well known, is provided with the upper andlower oil drain pet cocks 2 and 3, respectively. The level of thelubricating oil in the crank case is generally maintained midway betweenthese two pet-cocks. At the present time with no attachment when it isdesired to ascertain the quantity of oil in the crank case, the upperand lower petcocks are successively operated to let the oil flow out,thereby determining the oil level. In order to do this, the operatormust either reach way under the machine or must get out and read a gaugelocated on the lower pet-cock.

The present attachment for easily accomplishing this consists of abracket adapted to be attached to the dash or other porti ,11 of theautombile. This bracket, vin its preferred form, comprises an L-shapedportion 5, the vertical part of which is screwed, as at 6, to the dash,as illustrated. The base part 7 of the L-shaped portion is formed with acircular recess 8, the bottom of which communicates as by a conduit 9with the exit 10 on the exterior of the bracket. The upper portion ofthe L-shaped bracket 5 is shouldered as at 11, to receive a dependingflange 12 on a cap or top portion 13 of the bracket. This cap 13 islikewise formed with a circular recess 14: and a perforation or bore 15.The base and cap portions of the bracket receive and clamp between theman openended transparent tube 16, the opposite open ends seating in thecircular recesses. In order to hold the bracket and tube in assembledrelation, a screw 17 passes through the cap 13 and into the base 7. Apump plunger 18 which is formed with the usual double washer, one forthe upstroke and the other for the down-stroke, works within thetransparent tube 16 and is provided with a rod 19 passing through thebore 15 of the cap 13. The upper end of the plunger rod 19 is providedwith a suitable handle 20. A tube 21 connects the exit 10 of the basewith one of the pet-cocks 2 or 3' of the crank case, so that when theplunger" 18 is raised by the operator, the oil, it at the level of thepet-cock, will be at once transferred up to the glass cylinder-on thedash and isthen, if desired, immediately returned to the crank ease bypushing the plunger down. Thus the operator knows at a glance that thereis sufficientlubricant-in- If nooil' comesup, the tank the crank case.must be filled to the desired po1nt..

Figures 4 and 5 show the invention in connection with a double actingpumpcylinderand plunger, wherein the opposite ends of the cylinderiarerespect vely connected to the upper and lowerpet-cocksfi' and Theconstruction-of the pump cylinder in this modification is identical tothe single acting pump -.of "Figure 1 exceptithat the upper cap 14L isprovided with; a circular seat cori the appended claims.

responding to: the circularseatS vof the base member 7. witha l' oreorpassageway :23 connecting wiith the circular. seat and connecting with atubef22 screwing into or-otherwise attaehing tothe conduit 1 lVhere-theplunw ger 19 passes'thro-ugh-tthe upper cap 14, it is provided witha-paclring Qtof-any deesired type Pipe 22; connects with the upper.

pet-cockl Inthe opera-ton of this modt The-ca) 14 is also arovided fiedifornroi inventiomdf oil at the *leVel":

of the upper pet-cock 2, whenithe plunger is pushed-down, oil Wllib6-SUCkGCldDtO the upper end of the cylinder 16, whereas-if oilisonly'at the level OEfthe lower pet-cock 8, oil will not bedrawninto-the upper end of the cylinder. On theaotherr hand, whenthe-plunger 19 is raised, the? oil will-be sucked up through the pipe21- into the lower end of the cylinder.

Inthe modification shown. in Figure 6,

the doublepipeconneetion21 and 22 can be used in connection with-thesingle acting :pump of-Figure' 1, by, providing' ,the two:

Way'i'valve. connection- 25 communicating with-the passage 95in the baseBy this eve-my valve either the pipe 21 or the pipe 22 can be putcommunicationwith thelower working end of the cylinder 16.

It is, of course, clearwthat the-invention herein is :not onlyapphcabletman: automo- Having thus described my invention, what I claimas new anddesire to secure by Let ters-Patent, is:

1. In a devlce'of' the class described the automobile providedwithan oillevelindicatingj exit -.disposed: at a predetermined oil level, apumphaving a visible pump: cl'iamber disposed on said automobile incon-- Venient reach of the driver, a'conduit con.- -necting said exitand pump;saidvpumphhecombination otthe engine crank case of an" ingconstructed and arranged toilift at will a portionofthe oil inisaidcrankcase into-i the pump chamber.

2. A device adapted itor connection to an oil level indicating pet-cockcommunicating with the cranlricase of an a1i-tomobile,-in-,

eludinga bracket adapted to be attaehedito a convenient portion oftheautomobile substantmllyabove the-level ofthe crank case,

said bracket'comprising(separable baseZand cap-portions, a t-ransparonttube adapted to have its opposite open ,endsiseat on said base and cap 1portions, means adapted ito; clamp.

saidwbase-and cap portions and "said tube in assembled relatiomapump-plunger pass-v inp; through perforation in said cap and operableinsaid tube, saidabase-having e passgage therethrough connecting with-.the

open endof thetube, and a conduit conneet-- ing said passage withsaid-pet-cock opening.

In a device' oiithe class"described, in'

combination with the crank case 015 anauto- H1OtlTVQ-NQhIClG-, a,pumpadapted .tobe attached to" the :dashboard or: other convon---ientpoint I above the lGVGh' of oil in the cranks case, said pumpincluding 7a,.transparent.

. cylin der, nie ans Jestabiisl'ilng communication bile,.but=.alsoto.tanks or reservoirs ingen eral. Furthermore, it. is: notonlynpplieabie. for indicatingthe :lubrieating. .oil supply but alsothe.gasolene 'supply or other liquid supply. V

It is' again obviousthat while thepreferredixform of pump is illustratedand described, other types of 7 pumps -.may' be used and: otherconnections tOrftllQ' desired tank or reservoir availed of. Therpresentconstruc-' bet-ween opposite ends of said cylinderiiwith oil exitslocatedrat predetermined oil-levels (in the crank ease, whereby whensaid pumps .-is operated in oneidirection a/portion o'iiisaid 011 istransferred lnto the pumpcylind-er from one oil exit and when operated,inthe opposite direetionsoiliistransferred intothe .pumpicylinder fromthe other side.

In testimony ALBERTJLU. WALTER.

whereof, I afiix m signatureaa

